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Oven Roasted Sour Cream and Parmesan Onions

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These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special at a holiday dinner table.  Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown.

These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special at a holiday dinner table.  Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown.

These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special at a holiday dinner table.  Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown.

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This past weekend my in-laws were in town to visit as well as to help my sister-in-law move into a new apartment.  Actually, my mother-in-law had been in town for the last week and a half to help me with childcare through a busy week and simply to hang out with her four angelic grandchildren.  (Her words, not mine.)   She’s an absolute gem.  After a long two days of schlepping furniture and boxes, I was happy to fill their stomachs with a warm and delicious meals which included these Oven Roasted Sour Cream and Parmesan Onions.

These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special at a holiday dinner table.  Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown.

Our dinner menu consisted of my Turkey Meatloaf, make ahead Aunt Ruthie Mashed Potatoes and a garden salad.  Except I felt like I was missing something.  Why do I always struggle with side dishes?  I ended up digging through my recipe folder in my inbox and found a recipe for “gourmet onions” from my friend Sarah that I had filed away back in 2010.  It was definitely the inspiration I was looking for and was the jumping off point for these Oven Roasted Sour Cream and Parmesan Onions.

These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special at a holiday dinner table.  Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown.

Sarah’s original recipe called for slicing onions and sautéing them in oil before baking them.  I decided I wanted to spend less time in the kitchen and have fewer dishes to wash so my recipe is a bit different.  Instead, I oven roasted the onion rounds in the same pan that the finished dish is served in which means a sweeter onion flavor and one less dish to wash.  I’m winning all the way around with this one, my friends!

These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special at a holiday dinner table.  Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown.

These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special on a holiday dinner table next to my Make Ahead Sweet Potato Casserole and Twice the Onion Green Bean Casserole.  Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown. I mean, when your two year old is inhaling onions without a second thought, you know she’s your child.

These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special at a holiday dinner table.  Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown.

Oven Roasted Sour Cream and Parmesan Onions | Melanie Makes
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5 from 1 vote

Oven Roasted Sour Cream and Parmesan Onions

These five ingredient Oven Roasted Sour Cream and Parmesan Onions are an easy side dish that is perfect for any night of the week and equally special at a holiday dinner table. Onion rounds are drizzled in olive oil and oven roasted before being slathered in a sour cream and Parmesan cheese sauce and baked until golden brown.
Prep Time10 mins
Cook Time40 mins
Total Time50 mins
Course: Side Dish
Cuisine: American
Servings: 6 servings
Calories: 554kcal
Author: Melanie Bauer | Melanie Makes

Ingredients

  • 3 medium onions peeled and cut into 1/4" rounds
  • 3 tablespoons olive oil
  • 2 eggs
  • 8 ounces sour cream
  • 1-1/3 cups grated Parmesan cheese divided

Instructions

  • Preheat oven to 375 degrees.
  • Lay onion rounds on bottom of 9x13 pan.
  • Drizzle onions with olive oil and season with salt and pepper.
  • Bake for 15 minutes.
  • Meanwhile, in a small bowl, whisk together eggs, sour cream and 2/3 cup Parmesan cheese.
  • Remove onions from oven and raise temperature to 425 degrees.
  • Pour sour cream mixture over onions and smooth into an even layer.
  • Sprinkle remaining Parmesan cheese over sour cream mixture and season with additional salt and pepper.
  • Bake for 25-30 minutes or until golden and bubbly.

Nutrition

Calories: 554kcal | Carbohydrates: 9g | Protein: 37g | Fat: 41g | Sodium: 1550mg | Calcium: 20mg

Fellow onion lovers, if you have extra hanging out in the pantry, you’ll also no doubt want to check out How to Freeze Chopped Onions, Quick Pickled Vidalia Onions and how to make Slow Cooker Caramelized Onions.

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Comments

  7. Em says

    This may be a silly question but, can I freeze this? It's just me by myself, and although I could probably eat this whole thing lol, it'd be great if I could make it and portion it out for future meals. Thanks.
    Reply

    • Melanie says

      Hey, Em - Never a silly question! I haven't frozen leftovers, but they do save beautifully in the fridge and I doubt you'd have a problem eating them before they would go bad! Let me know what you think if you give them a try!
      Reply

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